The best motor is the one that meets the application requirements.  However, when both servo motors and stepper motors satisfy the basic requirements of a positioning application, it's important to have a deeper understanding of the two technologies to make an informed decision.

In this blog post,  I will summarize the differences between servo motor systems and stepper motor systems, then show how advances in stepper motor technology are closing the gap.

Topics: Stepper Motors, Absolute Positioning, Alphastep Hybrid Control, Servo Motors, Network, Service Life

Which type of electric motor do you size for your conveyor, XYZ table, or robot?  Before you select one, you must understand the characteristics of each type of motor in the market.

Topics: Conveyor, AC Motors, Stepper Motors, Speed Control, Motor Sizing, BLDC Motors, Washdown, Servo Motors, Motion Control Basics

Proper grounding is necessary for electrical devices for different reasons, but why do we do it?

Topics: AC Motors, Stepper Motors, Alphastep Hybrid Control, Linear & Rotary Actuators, BLDC Motors, Servo Motors, Cooling Fans, Motion Control Basics

Knowing how to use a product properly can make a huge difference in its performance and life.  For example, knowing how to maintain cast iron pans properly can make them last longer.  With electric motors, understanding the factors that affect motor life is the first step to extending life and decreasing costs in the long run.

Topics: AC Motors, Stepper Motors, Linear & Rotary Actuators, Speed Control, Servo Motors, Service Life

For someone who has never had experience wiring I/O for motion control, it can be scary the first time.  If devices are not wired correctly, it can cause a range of issues from a motor simply not doing what's expected to irreversible product damage.  I still get that nervous feeling before I press the START button on a demo.  Murphy's Law, anyone?

Topics: AC Motors, Stepper Motors, Alphastep Hybrid Control, Linear & Rotary Actuators, Speed Control, BLDC Motors, Servo Motors, Motion Control Basics

The significance of position control accuracy of motors varies depending on the application.  For an AGV in a farm with DC motor-driven wheels, position control accuracy is probably not as crucial as a surgical robot where incisions are controlled by servo motors or stepper motors.

Topics: Stepper Motors, Alphastep Hybrid Control, Gearheads, Servo Motors, Motion Control Basics

Besides load torque, acceleration torque, speed, and load inertia, overlooking certain sizing parameters during the motor sizing process can literally make or break your machine.

Topics: AC Motors, Stepper Motors, Speed Control, Motor Sizing, Capping, BLDC Motors, Gearheads, Servo Motors, Motion Control Basics

Now that we understand the calculations behind load torque and load inertia, we're a little closer to motor selection.  You might be wondering why I separated load torque and acceleration torque calculations.  That's because in order to calculate for acceleration torque, load inertia and speed must be calculated first. 

Topics: AC Motors, Stepper Motors, Alphastep Hybrid Control, Linear & Rotary Actuators, Speed Control, Motor Sizing, BLDC Motors, Servo Motors, Motion Control Basics

Other than torque or speed, another factor should be considered when sizing motors.  

Topics: AC Motors, Stepper Motors, Alphastep Hybrid Control, Linear & Rotary Actuators, Speed Control, Motor Sizing, BLDC Motors, Gearheads, Servo Motors, Rotary/Index Tables, Motion Control Basics

Proper sizing of a motor requires that 3 criteria must be met: torque, load inertia, and speed.  For the first part of this Motor Sizing Basics series, I will be explaining what load torque is, how to calculate it for specific application examples, and how it fits into the torque requirement for the application.

Topics: Conveyor, AC Motors, Stepper Motors, Alphastep Hybrid Control, Linear & Rotary Actuators, Speed Control, Motor Sizing, BLDC Motors, Servo Motors, Rotary/Index Tables, Motion Control Basics